JTable：一番右の列のグリッド線を削除します。

Question

私は今のようなJtableを持っていますが、右端の列のグリッド線を削除しようとしています。これを行う方法はありますか？また、列は交換可能です。

Answer 1

ここに私の試みです：JTableが最初のセル以外のセルと、間に垂直線を描画していない

• セットは、左の縦線を描画するためにBorderを設定します。

import java.awt.*; 
import java.awt.event.*; 
import java.util.*; 
import javax.swing.*; 
import javax.swing.border.*; 
import javax.swing.table.*; 

public class TableGridLineTest { 
    public JComponent makeUI() { 
    JTable table = new JTable(5, 3); 
    table.setAutoCreateRowSorter(true); 
    table.setFillsViewportHeight(true); 
    table.setShowVerticalLines(false); 
    //table.setShowHorizontalLines(false); 
    table.setIntercellSpacing(new Dimension(0, 1)); 
    table.setBorder(BorderFactory.createEmptyBorder()); 
    table.getTableHeader().setBorder(BorderFactory.createEmptyBorder()); 

    table.getTableHeader().setDefaultRenderer(new DefaultTableCellRenderer() { 
     private final CellBorder border = new CellBorder(2, 2, 2, 2); 
     @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus, 
      int row, int column) { 
     JLabel c = (JLabel) super.getTableCellRendererComponent(
      table, value, isSelected, hasFocus, row, column); 
     border.isStartCell = column == 0; 
     c.setBorder(border); 
     c.setBackground(Color.ORANGE); 
     return c; 
     } 
    }); 

    table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() { 
     private final CellBorder border = new CellBorder(2, 2, 2, 2); 
     @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus, 
      int row, int column) { 
     JComponent c = (JComponent) super.getTableCellRendererComponent(
      table, value, isSelected, hasFocus, row, column); 
     border.isStartCell = column == 0; 
     c.setBorder(border); 
     return c; 
     } 
    }); 

    JScrollPane scroll = new JScrollPane(table); 
    scroll.setBorder(BorderFactory.createLineBorder(Color.ORANGE)); 

    JPanel p = new JPanel(new BorderLayout()); 
    p.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY, 20)); 
    p.add(scroll); 
    return p; 
    } 
    public static void main(String... args) { 
    EventQueue.invokeLater(() -> { 
     JFrame f = new JFrame(); 
     f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
     f.getContentPane().add(new TableGridLineTest().makeUI()); 
     f.setSize(320, 240); 
     f.setLocationRelativeTo(null); 
     f.setVisible(true); 
    }); 
    } 
} 

class CellBorder extends EmptyBorder { 
    private final Color gridColor = UIManager.getColor("Table.gridColor"); 
    public boolean isStartCell = false; 
    protected CellBorder(int top, int left, int bottom, int right) { 
    super(top, left, bottom, right); 
    } 
    @Override public boolean isBorderOpaque() { 
    return true; 
    } 
    @Override public void paintBorder(Component c, Graphics g, int x, int y, int w, int h) { 
    Graphics2D g2 = (Graphics2D) g.create(); 
    g2.translate(x, y); 
    g2.setPaint(gridColor); 
    if (!isStartCell) { 
     g2.drawLine(0, 0, 0, h - 1); // Left line 
    } 
    g2.dispose(); 
    } 
}